Just a quick question for you experts . . .

I am traveling to London with my wife and two kids (ages 9 and 12) and
was wondering what you all thought might be the best travel/oyster
card to pick up. We'll be there from the 9-13 and the 15-20. I now
they used to have an unlimited weekely ticket but now i dont see that
option on the website.

Thanks in advance.

Richard